Question

求大神解释i2c_write( NVP6114+i, 0xFF, 0x01);括号里的参数是什么意思

extern void vdec_write_table(unsigned char chip_addr, unsigned char addr, unsigned char *tbl_ptr, unsigned char tbl_cnt);

void vdec_coaxial_select_ch(unsigned int ch)
{
int i = 0;
#ifdef ADG708BRUZ
i2c_write( NVP6114+i, 0xFF, 0x01);
i2c_write( NVP6114+i, 0x4C, ch);
i2c_write( NVP6114+i, 0xFF, 0x04);
i2c_write( NVP6114+i, 0xF7, 0x03);
#else //74LV125
i2c_write( NVP6114+i, 0xFF, 0x04);
if(ch%4 < 2)
i2c_write( NVP6114+i, 0xB7, ch);
else
i2c_write( NVP6114+i, 0xF7, ch);
#endif
}

Answer 1

第一个应该是设备地址，第轮培二个腊察唯是寄没森存器地址，第三个是要往寄存器写的数据